From 8fb6e77a618ce1a8151fab27445e0c3cc0241134 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 5 Dec 2015 11:13:46 +0100 Subject: beginning of issue #2 on github MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/echoes.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 src/echoes.c (limited to 'src/echoes.c') diff --git a/src/echoes.c b/src/echoes.c new file mode 100644 index 0000000..e1a0e63 --- /dev/null +++ b/src/echoes.c @@ -0,0 +1,90 @@ +/** + * libpassphrase – Personalisable library for TTY passphrase reading + * + * Copyright © 2013, 2014, 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#include +#include + +#define PASSPHRASE_USE_DEPRECATED +#include "passphrase.h" +#include "passphrase_helper.h" + + + +#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE) +/** + * The original TTY settings + */ +static struct termios saved_stty; +#endif /* !PASSPHRASE_ECHO || PASSPHRASE_MOVE */ + + + +/** + * Disable echoing and do anything else to the terminal settnings `passphrase_read` requires + */ +void passphrase_disable_echo(void) +{ + passphrase_disable_echo1(STDIN_FILENO); +} + + +/** + * Undo the actions of `passphrase_disable_echo` + */ +void passphrase_reenable_echo(void) +{ + passphrase_reenable_echo1(STDIN_FILENO); +} + +/** + * Disable echoing and do anything else to the terminal settnings `passphrase_read2` requires + * + * @param fdin File descriptor for input + */ +void passphrase_disable_echo1(int fdin) +{ +#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE) + struct termios stty; + + tcgetattr(fdin, &stty); + saved_stty = stty; + stty.c_lflag &= (tcflag_t)~ECHO; +# if defined(PASSPHRASE_STAR) || defined(PASSPHRASE_TEXT) || defined(PASSPHRASE_MOVE) + stty.c_lflag &= (tcflag_t)~ICANON; +# endif /* PASSPHRASE_STAR || PASSPHRASE_TEXT || PASSPHRASE_MOVE */ + tcsetattr(fdin, TCSAFLUSH, &stty); +#else /* !PASSPHRASE_ECHO || PASSPHRASE_MOVE */ + (void) fdin; +#endif /* !PASSPHRASE_ECHO || PASSPHRASE_MOVE */ +} + + +/** + * Undo the actions of `passphrase_disable_echo1` + * + * @param fdin File descriptor for input + */ +void passphrase_reenable_echo1(int fdin) +{ +#if !defined(PASSPHRASE_ECHO) || defined(PASSPHRASE_MOVE) + tcsetattr(fdin, TCSAFLUSH, &saved_stty); +#else /* !PASSPHRASE_ECHO || !PASSPHRASE_MOVE */ + (void) fdin; +#endif /* !PASSPHRASE_ECHO || !PASSPHRASE_MOVE */ +} + -- cgit v1.2.3-70-g09d2